Spring Security - 获取当前登录用户的详细信息

原文格式清晰,转载自:https://blog.csdn.net/cloume/article/details/84983006#commentBox

Spring Security - 获取当前登录用户的详细信息

在Spring框架里面,可以通过以下几种方式获取到当前登录用户的详细信息:

1. 在Bean中获取用户信息

Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if (!(authentication instanceof AnonymousAuthenticationToken)) {
    String currentUserName = authentication.getName();
    return currentUserName;
}

  
  
    
    
    
    
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Spring Security框架提供了多种AuthenticationToken的派生类,根据自己的应用场景,可以对SecurityContextHolder里面的AuthenticationToken进行类型转换,如下:

UsernamePasswordAuthenticationToken authenticationToken = (UsernamePasswordAuthenticationToken) SecurityContextHolder.getContext().getAuthentication();
//details里面可能存放了当前登录用户的详细信息,也可以通过cast后拿到
User userDetails = (User) authenticationToken.getDetails();

  
  
    
    
    
    
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PS. AuthenticationToken的类型转换同样适用于下面提到的Principal类。

2. 在Controller中获取用户信息

  1. 通过Principal参数获取:
import java.security.Principal;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class SecurityController {

@RequestMapping(value = "/username", method = RequestMethod.GET)
@ResponseBody
public String currentUserName(Principal principal) {
    return principal.getName();
}

}

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  1. 通过Authentication参数获取:
import org.springframework.security.core.Authentication;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class SecurityController {

@RequestMapping(value = "/username", method = RequestMethod.GET)
@ResponseBody
public String currentUserName(Authentication authentication) {
    return authentication.getName();
}

}

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  1. 通过HttpServletRequest获取
import java.security.Principal;
import javax.servlet.http.HttpServletRequest;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

@Controller
public class SecurityController {

@RequestMapping(value = "/username", method = RequestMethod.GET)
@ResponseBody
public String currentUserNameSimple(HttpServletRequest request) {
    Principal principal = request.getUserPrincipal();
    return principal.getName();
}

}

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3. 通过Interface获取用户信息

通过Interface获取其实和第一种在Bean中获取用户信息是一样的,都是访问SecurityContextHolder获取的,只是进行了封装。

public interface IAuthenticationFacade {
    Authentication getAuthentication();
}
@Component
public class AuthenticationFacade implements IAuthenticationFacade {
@Override
public Authentication getAuthentication() {
    return SecurityContextHolder.getContext().getAuthentication();
}

}

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下面是使用方法:

@Controller
public class SecurityController {
    @Autowired
    private IAuthenticationFacade authenticationFacade;
@RequestMapping(value = "/username", method = RequestMethod.GET)
@ResponseBody
public String currentUserNameSimple() {
    Authentication authentication = authenticationFacade.getAuthentication();
    return authentication.getName();
}

}

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4. 在JSP页面中获取用户信息

要使用Spring Security的标签特性,首先要在JSP页面引入Securitytag

<%@ taglib prefix="security" uri="http://www.springframework.org/security/tags" %>

 
 
   
   
   
   
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通过以下方式可以获取到当前登录用户:


    authenticated as  


 
 
   
   
   
   
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更多JSTL的语法可以参考:https://docs.spring.io/spring-security/site/docs/5.0.0.RELEASE/reference/pdf/spring-security-reference.pdf

注意这是Spring Security 5.0的版本,其他版本可以从https://docs.spring.io/spring-security/site/docs/这里选择。

参考链接: http://www.baeldung.com/get-user-in-spring-security

转载自:https://blog.csdn.net/cloume/article/details/84983006#commentBox

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